I have a girlfriend i loved so much. We've been dating for almost 4 years now and she's lovely. Recently, i was about listening to my voice mail and i took her phone so i could dial some numbers i read from the voice mail on it. After doing all i wanted,i started deleting the numbers i dialed. To my huge surprise i found the number of her ex on the call log and it was on dialed. I checked the details and it was a time i wasn't around at home but not too far from the house. I have told her several times without number to delete his number from her phone but I don't know she hasn't. And she had really been changing these days which i always overlook and forgive her. But this one i can't overlook because I sense there is fire on the mountain. What do I do please?